Commitments and Contingencies	9 Months Ended
Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Ship Purchase Obligations Our future capital commitments consist primarily of new ship orders. As of September 30, 2017, we had two Quantum-class ships, two Oasis-class ships and two ships of a new generation of ships, known as "Project Icon," on order for our Royal Caribbean International brand with an aggregate capacity of approximately 30,500 berths. Additionally, as of September 30, 2017, we have four Edge-class ships on order for our Celebrity Cruises brand with an aggregate capacity of approximately 11,600 berths. The following provides further information on recent developments with respect to our ship orders. During the second quarter of 2017, we entered into agreements with Meyer Turku to build two "Project Icon" ships. Subsequently, in October 2017, we entered into credit agreements for the unsecured financing of these ships for up to 80% of each ship’s contract price. For each ship, the official Finnish export credit agency, Finnvera, plc, has agreed to guarantee to the lenders a substantial majority of the financing, with a smaller portion of the financing to be 95% guaranteed by Euler Hermes, the official German export credit agency. The maximum loan amount under each facility is not to exceed €1.4 billion, or approximately $1.7 billion, based on the exchange rate at September 30, 2017. Interest on approximately 75% of each loan will accrue at a fixed rate of 3.56% and 3.76% for the first and the second Icon-class ships, respectively, and the balance will accrue interest at a floating rate ranging from LIBOR plus 1.10% to 1.15% and LIBOR plus 1.15% to 1.20% for the first and the second Icon-class ships, respectively. Each loan will amortize semi-annually and will mature 12 years following delivery of each ship. The first and second Icon-class ships will each have a capacity of approximately 5,650 berths and are expected to enter service in the second quarters of 2022 and 2024, respectively. In July 2017, we entered into credit agreements for the unsecured financing of the third and fourth Edge-class ships and the fifth Oasis-class ship for up to 80% of each ship’s contract price through facilities to be guaranteed 100% by Bpifrance Assurance Export, the official export credit agency of France. Under these financing arrangements, we have the right, but not the obligation, to satisfy the obligations to be incurred upon delivery and acceptance of each ship under the shipbuilding contract by assuming, at delivery and acceptance, the debt indirectly incurred by the shipbuilder during the construction of each ship. The maximum loan amount under each facility is not to exceed €684.2 million in the case of the third Edge-class ship and the United States dollar equivalent of €714.6 million and €1.1 billion in the case of the fourth Edge-class ship and fifth Oasis-class ship, or approximately $844.7 million and $1.3 billion, respectively, based on the exchange rate at September 30, 2017. The loans will amortize semi-annually and will mature 12 years following delivery of each ship. Interest on the loans will accrue at a fixed rate of 1.28% for the third Edge-class ship and at a fixed rate of 3.18% for both, the fourth Edge-class ship and the fifth Oasis-class ship. The third and fourth Edge-class ships, each of which will have a capacity of approximately 2,900 berths, are expected to enter service in the fourth quarters of 2021 and 2022, respectively. The fifth Oasis-class ship will have a capacity of approximately 5,450 berths and is expected to enter service in the second quarter of 2021. In September 2017, we entered into an agreement to purchase a ship for our Azamara Club Cruises brand. The sale is expected to be completed with the delivery of the ship scheduled for March 2018. As of September 30, 2017, the aggregate cost of our ships on order, not including any ships on order by our Partner Brands, was approximately $13.0 billion, of which we had deposited $323.2 million as of such date. Approximately 53.8% of the aggregate cost was exposed to fluctuations in the Euro exchange rate at September 30, 2017. Refer to Note 10. Fair Value Measurements and Derivative Instruments for further information. Litigation We are routinely involved in claims typical within the cruise vacation industry. The majority of these claims are covered by insurance. We believe the outcome of such claims, net of expected insurance recoveries, will not have a material adverse impact on our financial condition or results of operations and cash flows. Other If any person acquires ownership of more than 50% of our common stock or, subject to certain exceptions, during any 24-month period, a majority of the Board is no longer comprised of individuals who were members of the Board on the first day of such period, we may be obligated to prepay indebtedness outstanding under our credit facilities, which we may be unable to replace on similar terms. Our public debt securities also contain change of control provisions that would be triggered by a third-party acquisition of greater than 50% of our common stock coupled with a ratings downgrade. If this were to occur, it would have an adverse impact on our liquidity and operations.

Commitments and Contingencies

Ship Purchase Obligations

Our future capital commitments consist primarily of new ship orders. As of September 30, 2017, we had two Quantum-class ships, two Oasis-class ships and two ships of a new generation of ships, known as "Project Icon," on order for our Royal Caribbean International brand with an aggregate capacity of approximately 30,500 berths. Additionally, as of September 30, 2017, we have four Edge-class ships on order for our Celebrity Cruises brand with an aggregate capacity of approximately 11,600 berths. The following provides further information on recent developments with respect to our ship orders.

During the second quarter of 2017, we entered into agreements with Meyer Turku to build two "Project Icon" ships. Subsequently, in October 2017, we entered into credit agreements for the unsecured financing of these ships for up to 80% of each ship’s contract price. For each ship, the official Finnish export credit agency, Finnvera, plc, has agreed to guarantee to the lenders a substantial majority of the financing, with a smaller portion of the financing to be 95% guaranteed by Euler Hermes, the official German export credit agency. The maximum loan amount under each facility is not to exceed €1.4 billion, or approximately $1.7 billion, based on the exchange rate at September 30, 2017. Interest on approximately 75% of each loan will accrue at a fixed rate of 3.56% and 3.76% for the first and the second Icon-class ships, respectively, and the balance will accrue interest at a floating rate ranging from LIBOR plus 1.10% to 1.15% and LIBOR plus 1.15% to 1.20% for the first and the second Icon-class ships, respectively. Each loan will amortize semi-annually and will mature 12 years following delivery of each ship. The first and second Icon-class ships will each have a capacity of approximately 5,650 berths and are expected to enter service in the second quarters of 2022 and 2024, respectively.

In July 2017, we entered into credit agreements for the unsecured financing of the third and fourth Edge-class ships and the fifth Oasis-class ship for up to 80% of each ship’s contract price through facilities to be guaranteed 100% by Bpifrance Assurance Export, the official export credit agency of France. Under these financing arrangements, we have the right, but not the obligation, to satisfy the obligations to be incurred upon delivery and acceptance of each ship under the shipbuilding contract by assuming, at delivery and acceptance, the debt indirectly incurred by the shipbuilder during the construction of each ship. The maximum loan amount under each facility is not to exceed €684.2 million in the case of the third Edge-class ship and the United States dollar equivalent of €714.6 million and €1.1 billion in the case of the fourth Edge-class ship and fifth Oasis-class ship, or approximately $844.7 million and $1.3 billion, respectively, based on the exchange rate at September 30, 2017. The loans will amortize semi-annually and will mature 12 years following delivery of each ship. Interest on the loans will accrue at a fixed rate of 1.28% for the third Edge-class ship and at a fixed rate of 3.18% for both, the fourth Edge-class ship and the fifth Oasis-class ship. The third and fourth Edge-class ships, each of which will have a capacity of approximately 2,900 berths, are expected to enter service in the fourth quarters of 2021 and 2022, respectively. The fifth Oasis-class ship will have a capacity of approximately 5,450 berths and is expected to enter service in the second quarter of 2021.

In September 2017, we entered into an agreement to purchase a ship for our Azamara Club Cruises brand. The sale is expected to be completed with the delivery of the ship scheduled for March 2018.

As of September 30, 2017, the aggregate cost of our ships on order, not including any ships on order by our Partner Brands, was approximately $13.0 billion, of which we had deposited $323.2 million as of such date. Approximately 53.8% of the aggregate cost was exposed to fluctuations in the Euro exchange rate at September 30, 2017. Refer to Note 10. Fair Value Measurements and Derivative Instruments for further information.

Litigation

We are routinely involved in claims typical within the cruise vacation industry. The majority of these claims are covered by insurance. We believe the outcome of such claims, net of expected insurance recoveries, will not have a material adverse impact on our financial condition or results of operations and cash flows.

Other

If any person acquires ownership of more than 50% of our common stock or, subject to certain exceptions, during any 24-month period, a majority of the Board is no longer comprised of individuals who were members of the Board on the first day of such period, we may be obligated to prepay indebtedness outstanding under our credit facilities, which we may be unable to replace on similar terms. Our public debt securities also contain change of control provisions that would be triggered by a third-party acquisition of greater than 50% of our common stock coupled with a ratings downgrade. If this were to occur, it would have an adverse impact on our liquidity and operations.